"use strict";
const path = require("path");
const { version } = require("./package.json");
function resolve(dir) {
  return path.join(__dirname, dir);
}
const name = "document";
const port = 3500;

module.exports = {
  publicPath: "./",
  outputDir: "dist",
  assetsDir: "static",
  lintOnSave: process.env.NODE_ENV === "production",
  productionSourceMap: false,
  devServer: {
    port,
    open: false,
    overlay: {
      warnings: false,
      errors: true
    },
    proxy: {
      "/mock": {
        target: process.env.VUE_APP_BASE_URL,
        changeOrigin: false,
      },
      "/api": {
        target: process.env.VUE_APP_BASE_URL,
        changeOrigin: false,
        pathRewrite: {}
      },
    },
    // before: require('./mock/server'),
  },
  configureWebpack: {
    name,
    output: {
      // 输出重构  打包编译后的 文件名称  【模块名称.版本号】
      filename: `js/[name]-${version}.js`,
      chunkFilename: `js/[name]-${version}.js`
    },
    resolve: {
      alias: {
        "@": resolve("src")
      }
    }
  },
  chainWebpack(config) {
    config.plugin("preload").tap(() => [
      {
        rel: "preload",
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
        include: "initial"
      }
    ]);

    config.plugins.delete("prefetch");

    config.module
      .rule("svg")
      .exclude.add(resolve("src/icons"))
      .end();
    config.module
      .rule("icons")
      .test(/\.svg$/)
      .include.add(resolve("src/icons"))
      .end()
      .use("svg-sprite-loader")
      .loader("svg-sprite-loader")
      .options({
        symbolId: "icon-[name]"
      })
      .end();

    config.when(process.env.NODE_ENV !== "development", config => {
      config
        .plugin("ScriptExtHtmlWebpackPlugin")
        .after("html")
        .use("script-ext-html-webpack-plugin", [
          {
            // `runtime` must same as runtimeChunk name. default is `runtime`
            inline: /runtime\..*\.js$/
          }
        ])
        .end();
      config.optimization.splitChunks({
        chunks: "all",
        cacheGroups: {
          libs: {
            name: "chunk-libs",
            test: /[\\/]node_modules[\\/]/,
            priority: 10,
            chunks: "initial" // only package third parties that are initially dependent
          },
          elementUI: {
            name: "chunk-elementUI", // split elementUI into a single package
            priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
            test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
          },
          commons: {
            name: "chunk-commons",
            test: resolve("src/components"), // can customize your rules
            minChunks: 3, //  minimum common number
            priority: 5,
            reuseExistingChunk: true
          }
        }
      });
      // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
      config.optimization.runtimeChunk("single");
    });
  },
  css: {
    loaderOptions: {
      sass: {
        prependData: `@import "./src/styles/config";`,
      },
    },
  }
};
